Geotimes - April 2007 - Print Table of Contents

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April 2007
vol. 52, no. 4

FEATURES

24 Marine Protected Areas Help Safeguard Aquatic Life
Although many marine ecosystems are facing tough challenges, scientific evidence suggests it's not too late to take serious measures to protect life in the oceans.
Jane Lubchenco and Kirsten Grorud-Colvert

30 The Agricultural Impact of Global Climate Change: How Can Developing-Country Farmers Cope?
Researchers are working with farmers to institute sustainable land-use practices and to develop crops that are more "climate resilient," to help alleviate some of the potential implications of global climate change.
Nathan Russell

35 Speak Now or Forever Hold Your Peace: The Business World Looks at Climate Change
In recent months, the business world has been stepping up its calls on Congress to develop national climate change policies. Short of such policies, some businesses are taking matters into their own hands.
Truman Semans and Andre de Fontaine

38 Drinking Water for All: A 21st Century Challenge
As populations expand and the climate warms, the challenge of finding and maintaining potable water around the world grows more intense.
Peter Rogers

NEWS NOTES

8 NEWS
Massive Antarctic lakes discovered * Found: Tibet's missing anchor * Ocean budget surges * Two continents, one conclusion * Ice twists under pressure * IAEA updates radiation warning symbol * Ocean waves drive Earth's hum * Rainfall affected by climate change * Ancient glaciers melting quickly

16 GEOPHENOMENA
Ancient caldera hints at Cascades’ power
Bubbling methane makes Arctic seafloor hilly

18 ENERGY & RESOURCES
Royalties revisited
Mineral Resource of the Month: Thallium

VIEWS

7 A COMMENT ON...
Education: Why Do I Have to Learn Geometry?
Math and science are critical subjects for students to learn at a young age. Congress is considering a host of new initiatives to help bolster math and science education.
Congressman Vernon J. Ehlers

60 GEOLOGIC COLUMN
Taxpayer’s Regret
When broken down on a per capita basis, it’s much easier to understand where our individual tax dollars are going. This April, some people may be suffering taxpayers’ regret.
Fred Schwab

DEPARTMENTS

4 FROM THE EDITOR
6 LETTERS: Perspectives from readers
20 WHERE ON EARTH?

44 TRENDS & INNOVATIONS
Singing Songs of Volcanoes
Researchers are exploring the power of sound, recording the seismic rumblings of active volcanoes and making music out of the garbled recordings.
Carolyn Gramling

46 GEOMEDIA
Movies: Flock of Dodos: Evolution going the way of the dodo?
Books: Charles F. Richter: The man behind the magnitude scale: A review of Richter’s Scale: Measure of an Earthquake, Measure of a Man
On the Web: Photographer captures life through time

50 GEOMARKETPLACE
52 CLASSIFIEDS: Career opportunities

58 PROFILES
Wallace Broecker: Changes in the atmosphere

59 GEOLOGIC HISTORY
April 22, 1970: Earth Day Is Celebrated

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